Are 4wd Manual & Auto Transfer Cases The Same?

[confuzion]

Hi Guys,

I should probably have asked this before i bought the autobox & transfer case but i was told by a good source that all 4wd transfer case's were the same.

Basically i have an 89 r32 gtr where my transfer case is making a bearing/grinding noise in 4wd mode only. Rwd is fine, 4wd still actually works like normal its just really noisy.

So basically using the info i was told i bought a stagea auto transfer case (gbox came with it) and my mechanic says they are different.

Im not sure in what way, my question is, is it possible to use the auto transfer in my car or am i screwed?

Thanks dudes

Alem

[CruiseLiner]

they are different outer casings, as the manual has the shifter coming out of it, and the auto doesnt. plus the stagea auto transfer case internals are not as heavy duty and only have 6 studs pressing the clutches together and gtr is about 8 i think from memory. ive had both apart and side by side as i have a stagea and i ripped the stagea TFC apart to swap over parts into my current gtr transfer case and they are different.

the actual clutch plates and the rest are all the same though, so put the clutch packs from the stagea one into the gtr casing and use the gtr splines, and everything.

the clutch packs are the only thing that wear out so switch em over and u should be right

they are $37 each from nissan new, and u need 12 of em if u want it 100% new

the grinding etc sounds like bearings so i'd be replacing them too with brand new ones, dont waste your time with used ones unless u like doing it twice as they are bound to be just as bad

Edited June 22, 2006 by CruiseLiner

[bogcock]

yeh what he^ said!

[confuzion]

Thanks for the reply bud,

Thats good news that the clutch plates fit, what about bearings etc as like i said there is some sort of a bearing or whirring noise as speed gets faster and only in 4wd mode

Thanks again

[Edit] - Cool just saw your edit about the bearings - Ill try get a price on new bearings etc Thanks

Edited June 22, 2006 by confuzion

[CruiseLiner]

Thanks for the reply bud,

Thats good news that the clutch plates fit, what about bearings etc as like i said there is some sort of a bearing or whirring noise as speed gets faster and only in 4wd mode

Thanks again

all the internal are identical except the 6 studs compared to 8 on the gtr one, so less clamping pressure on stagea unit. im not sure if thats because its from an auto or because its just a better design on the gtr manual TF case.

bearings are all the same as well, but its a pain in the arse replacing stuff in the transfer case and bearings from nissan aint too pricey and u will know they are not the problem if the noise continues after u reinstall it.

u havent pulled the actuator from the rear of the TFC have u in the recent past since the noise started? i found a problem in mine when i removed the actuator from the very rear of the TFC and when u reinstall it, the little peg that presses the clutches on gets jammed to the side abit and makes the 4wd on 100% of the time and it whines and makes loud noises when operating.

[confuzion]

Ok cool thanks

Hmm interesting, ill have a look at that tomorrow.. Basically the noise just started and eventually got louder and louder and now sounds like a cortina's diff on its last legs haha..

My 4wd torque guage is acting normally not anywhere near 100% on or anything like that but definatley worth a look